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1 **Table of Contents:**
2
3 {{toc/}}
4
5
6
7 = 1. Overview =
8
9
10 There are some new models of Dragino sensors support OTA update via Private LoRa Protocol, (Even the sensor runs LoRaWAN protocol by default)
11
12
13 = 2. Support Models =
14
15
16 Here list the models that support OTA Update.
17
18
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24 (% border="1" cellspacing="5" class="doOddEven filterable grid sortable" id="tableid" style="background-color:#f2f2f2; width:670px" %)
25 (% class="sortHeader" %)|=(% style="width: 193px;background-color:#D9E2F3" %)Models|=(% style="width: 222px;background-color:#D9E2F3" %)Firmware Version|=(% style="width: 251px;background-color:#D9E2F3" %)Comments
26 |(% style="width:193px" %)PS-LB, SDI-12-LB|(% style="width:222px" %)All firmware version|(% style="width:251px" %)
27 |(% style="width:193px" %)SN50v3-LB|(% style="width:222px" %)All firmware version|(% style="width:251px" %)
28 |(% style="width:193px" %)D20-LB/D20S/LB/D22-LB/D23-LB|(% style="width:222px" %)All firmware version|(% style="width:251px" %)
29 |(% style="width:193px" %)(((
30 LHT65N-PIR,LHT65N-E31F
31 )))|(% style="width:222px" %)All firmware version|(% style="width:251px" %)
32 |(% style="width:193px" %)S31-LB, S31B-LB|(% style="width:222px" %)All firmware version|(% style="width:251px" %)
33
34
35
36 = 3. How to do OTA update =
37
38 == 3.1 Required Components ==
39
40
41 * Hardware: [[LA66 USB>>doc:Main.User Manual for LoRaWAN End Nodes.LA66 USB LoRaWAN Adapter User Manual.WebHome]] with [[OTA_firmware>>https://www.dropbox.com/sh/4qnjreg1esxu16i/AADbRjW_tuBP3IIkmf11nSoma?dl=0]] installed.
42
43 * Software: [[OTA_Tool>>https://www.dropbox.com/sh/4qnjreg1esxu16i/AADbRjW_tuBP3IIkmf11nSoma?dl=0]]. Only support Windows now
44
45
46 [[image:image-20230513120722-2.png||height="409" width="866"]]
47
48
49 == 3.2 Update Steps ==
50
51
52 === (% style="color:blue" %)**Step1 :**(%%) Plug LA66 USB to PC and run OTA_Tool. ===
53
54
55 [[image:image-20230114172703-1.png]]
56
57
58 === (% style="color:blue" %)**Step2:**(%%) Set up OTA Tool ===
59
60
61 * (% style="color:blue" %)**DevEUI**(%%): Input Dev EUI of your sensor
62
63 * (% style="color:blue" %)**Password**(%%): Passord of your sensor
64
65 * (% style="color:blue" %)**Port**(%%): Com port of LA66 USB
66
67 * (% style="color:blue" %)**LoRa_Freq**(%%): Choose the shipped frequency band of your sensor.
68
69 * (% style="color:blue" %)**Upload_File**(%%): The firmware to be upload to the sensor. make sure the firmware is with surfix _without_bootloader. For example: LHT65N_EU868_v1.5_without_bootloader.
70
71 * (% style="color:blue" %)**EUI File**(%%): If customer has lots of sensors. He can also import the Dev EUI files and use droplist to choose the sensor to update. Format is as below:
72
73 [[image:image-20230114174640-3.png||height="130" width="1169"]]
74
75
76 === (% style="color:blue" %)**Step3:**(%%) Press Start in OTA Tool and then Press Reset button to restart LA66 USB ===
77
78
79 After press reset button, LA66 USB will restart and broadcast update process with the Dev EUI and Password.
80
81
82 === (% style="color:blue" %)**Step4:** (%%)Press reset button on the end node, or re-activate the end node. ===
83
84
85 In every reboot/ reactivate, the end node will check if there is update request. If end node gets the update request from LA66. End node will check if the Dev EUI and Password match. If match, End node will establish connection with LA66 USB for OTA update.
86
87
88 === (% style="color:blue" %)**Step5:**(%%) Check result. ===
89
90
91 Below shows the update successul result.
92
93 [[image:image-20230114174134-2.png]]
94
95
96 = 4. FAQ =
97
98 == 4.1 Can i use other devices to connect to PC if i don't have LA66 USB? ==
99
100
101 If user doesn't have LA66 USB Adapter, they can still use other Dragino Device to connect to PC for OTA update.
102
103 (% style="color:blue" %)**Steps:**
104
105 * Find the suitable mode which base on LA66 chip ( All LoRaWAN model with LB or LS suffix , such as SN50v3-LB)
106
107 * Update the LA66 USB OTA firmware to the device.
108
109 * Connect the device to PC via UART interface.
110
111 * Make sure power off or update the firmware back to original firmware , because the LA66 USB OTA fimware is not low power consumption firmware. it will consume the battery very fast.
112
113
114
115 == 4.2 Where to find OTA Password? ==
116
117
118 Each device has a shipped label with OTA Password which is 16 chars. like below. If user don't find this, please send us a photo for the device with Dev EUI to [[support@dragino.com>>mailto:support@dragino.com]] . and we will search the password for you.
119
120 [[image:image-20230519102907-2.png||height="286" width="580"]]
121
122
123 == 4.3 How about if i upgrade a crashed firmware via OTA update? ==
124
125
126 OTA update is done via Bootloader and only change the firmware partition. So update a crash firmware via OTA update won't destroy bootloader and user can use OTA method to update again.
127
128 (% style="color:red" %)**Here are notice:**
129
130 ~1. OTA update frequency depend on the firmware frequency. If there is no frequency in the firmware. Bootloader will use EU868 as default frequency.
131
132 2. OTA update require a reset or reactivate action. If the crash firmware doesn't have them work, user need to manuall push the physic reset button on the PCB or power off/on device.
133
134
135 = 5. OTA Tool Known Bug: =
136
137
138 ~1. If user click "(% style="color:blue" %)**Start**"(%%) but there is issue during update. User may need to close and open the tool again.
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